MTL - After Hitting 200 Million - ~ people in the rivers and lakes

I, who should have died after being hit by a car, was born again in another world.

In a world where dungeons were an essential part of it, Rein was trying to conquer as many as possible. They were the key to gain powers in the fastest possible way. So, to reach his full potential and to become the strongest, he became a great dungeon conqueror.With his trusty friends and lovers, he was definitely going to reach the peak alongside everyone. Join Rein and see how he went from strong to stronger and then the strongest.__________________1. The harem would not be too large(I'm not sure how many but probably just 4-5 main and few other here and there). All the girls would be getting their time and story.2. The story is starting when the MC is in the middle of his growth stage and not at the very beginning. But his beginning will be mentioned in the story in some form.3. I don't think I need to mention this, but obviously it will not have any NTR, rape or that kind of stuff. It is actually quite a wholesome story focusing mainly on adventure, action and bit of romance and slice of life.

Have you ever thought a monster that has a job of a summoner and a tamer

what should it call itself Monster Summoner? Monster Tamer? but he itself was a monster too

Watch as our mc travels the world as an reincarnated human who turn into a monster

In the heart of Dirtwich City, the Ruan family’s monthly combat contests draw fighters from all around. Among them, Ruan Xiude, a striking young competitor, stumbles upon a hidden Void. This Void reveals to him a unique attribute panel, visible to him alone. It grants him the Divine Level Duplication System, marking him as its sole chosen wielder. Ruan, once a simple orphan, now emerges as a notable figure in the martial realm of Zenithia Continent. Despite his talents, he’s not seen as the top contender in the Ruan family.Armed with the ability to duplicate martial arts and magical skills, Ruan’s destiny and the world’s balance are poised for a dramatic shift.But what unforeseen consequences will Ruan’s new powers unleash?